Designing a double-way spread permutation framework utilizing chaos and S-box for symmetric image encryption

Recently, many chaos-based image cryptosystems have been investigated. However, some drawbacks of existing schemes are as follows: (1) the high computational complexity and bad scrambling effect of permutation algorithm reduce the security and practicality of the encryption system; (2) the insufficient association between encryption algorithm and plaintext makes it suffer from low plaintext sensitivity and inability to effectively resist chosen plaintext attack; (3) some algorithms are one-time-pad-like encryption systems, which reduce their practical value; (4) adequate plaintext relation elevates the plaintext sensitivity but also increases the ciphertext sensitivity of a cryptosystem and make it possess low robustness of defending noise and data loss attacks. To address the defects of existing works, a symmetric plaintext-related image cryptosystem based on a new scrambling framework using S-box is proposed. Firstly, substitution-box(S-box) of AES is first used to develop a new scrambling framework, namely double-way spread permutation framework (DWSPF), which can be used to scramble color images and gray images of any size. Then, the present study develops a new method of plaintext association that one parameter carried the information of original image and used to control the encryption process is padded to the encrypted array which is transmitted to the receiver. Such a strategy can realize the sufficient plaintext relation without the use of one-time-pad encryption technology and avoid high ciphertext sensitivity, which can well resist noise attacks and information loss attacks. Sufficient experiments results demonstrate that the proposed permutation framework and cryptosystem possess excellent security and efficiency compared with the state-of-art works.